參數(shù)資料
型號: VSP2265
英文描述: 10-Bit. 25 Msps CCD Signal Processor for Digital Cameras with V/H Timing Generator
中文描述: 10位。 25 Msps的CCD信號處理器為數(shù)碼相機與V /小時時序發(fā)生器
文件頁數(shù): 13/87頁
文件大小: 1303K
代理商: VSP2265
Theory of Operation
9
SLES056
December 2002
VSP2265
An on-chip V-rate timing generator creates all the signals that are required for specific CCD image sensors.
The TG contains the line and pixel counters used to generate V-rate timing. Figure 2
2 is the block diagram
of the line and pixel counter circuit. A maximum 2047 lines and 4095 pixels per line are supported in time scale.
Decoder
H[10:0]
P[12:0]
RST
Line Counter
(MAX 2047 lines)
clk
VD
13 Bit
RST
Pixel Counter
(MAX 4095 Pixels)
clk
11 Bit
F/F
F/F
SYSRST
HD
MCLK
Figure 2
2. VSP2265 Line and Pixel Counter Block Diagram
Figure 2
4 shows a V-rate timing generator block diagram. By one H (horizontal line) before CCD readout,
serial data transfer must be completed by the user, and data must be loaded in the registers containing CCD
model, operation mode, integration time, and electronic zoom area information. Just before CCD readout,
information in the registers is supplied automatically to the decoder, which generates the V-rate signal using
line counter and pixel counter data. Not only the signals used for the CCD, but also the strobe light control
signal is supported. CPOB, CLPD, and PBLK can select either the internal generation mode or the external
supply mode.
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相關(guān)代理商/技術(shù)參數(shù)
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